4. Fit for chemotherapy (WBC ≥ 4.0×109/L；neutrophil count＞ 1.5×109/L；PLT ≥ 80×109/L；ALT ≤ 3 times the upper limit of normal range；AST ≤ 3 times the upper limit of normal range；TBil ≤ twice the upper limit of normal range；ECOG PS ≤ 2；without severe cardiopulmonary defects)